Thomson route is v popular among cyclists at this early hours . Unfortunately that route is “dirty “ at that hours of the night . Be careful. I would not even jog during that hour.
Sillypore road too crowded and small. And most are egoistic and selfish. Ride carefully, best to ride a seletar and changi coastal road. I do that, all road are dangerous, have camera on the front and back just in case.